Browsing is a valuable way to learn about birds, however it is a brute force approach and not designed for identification.
A more sophisticated approach to finding a bird with specific field marks is to use the Step by Step Search.
You can also try the Wizard to find a bird, which uses a question and answer approach, but again it does not give you the flexibility of the Step by Step Search.

Arizona Woodpecker: Small woodpecker with brown upperparts and heavily spotted and barred white underparts. The forehead and crown are brown, nape patch is red, and throat is white. Face is white with a large, brown cheek patch, creating a white eyebrow and line from the bill to neck.

Black-capped Vireo: Small vireo, olive-green upperparts, black hood, white spectacles interrupted with black above the eye, white underparts with olive-yellow flanks. Wings are dark with two pale bars. Iris is red-brown to red. It has been listed as an endangered species since 1987.

Northern Lapwing: Large, unique plover with black breast, face, crown, and long upright head plumes; back is green-tinged purple and copper. Belly and sides are white, uppertail is white with a black tip, and undertail coverts are rich rufous-orange. Wings are dark with white tips; legs are pink.

Gunnison Sage-Grouse: Recognized as a species in 2000. Large grouse, mottled gray-brown overall with white breast, black face, chin, throat, bib and belly. Black bill. Yellow eye combs and long black filoplumes on neck show when courting. Brown tail feathers are long and pointed, with white bands.

Jabiru: Huge stork, one of the largest flying birds. Plumage is entirely white, head and neck are black and featherless with a red throat pouch. Black bill is large, slightly upturned. Black legs and feet. Alternates between strong, slow wing beats and short glides. Soars on thermals and updrafts.

Red-billed Tropicbird: This slender, white, gull-like seabird is the largest tropic bird. It has long white tail streamers, a white back that is finely barred in black, a black eye stripe curves that upward behind the eye, black primaries, and a red bill. Female resembles the male but is less tinged with red. Feeds on fish and squid. Direct, rapid flight; pigeon like, stiff, shallow wing beats.

Common Sandpiper: Eurasian counterpart to the Spotted Sandpiper; has dusky gray upperparts, heavily streaked breast, and sparkling white underparts. Best distinguished by its habit of standing in a semi-crouch and bobbing back and forth. Flies low over water with stiff shallow wing beats and glides.

Aleutian Tern: A medium tern, with white forehead, black cap, eyeline, bill, and legs. Upperparts and underparts are gray with white rump and tail. Undertail coverts, cheeks, and area below cap are white. Juvenile is buff and brown on top and flanks, with pale gray underparts. Wing projects beyond tip of tail at rest. Strong direct flight with deep wing beats, often high above water.

Swallow-tailed Kite: The largest of North America kites, has black upperparts which contrast with white head and underparts. In flight it shows long pointed wings with black flight feathers and white wing linings. Has a 15-16 inch-long black tail with deep fork. The neck, breast and belly are white.

Broad-billed Sandpiper: Small sandpiper with a long bill that curves down at the tip. Pale-edged dark brown feathers on upperparts give a scaled appearance; back shows two pale streaks in flight; underparts are white with dark spots on breast and neck. Head has dark cap and forked white eyebrows.

Black-capped Petrel: Large petrel with white underparts, dark brown to black back and upper wings, black cap, and white collar (this field mark is missing in some birds). Tail is long, dark, and wedge-shaped; underwings show broad dark margins. Hooked bill is dark, legs are pink. High arcing flight.

Tufted Titmouse: The largest titmouse, it has gray upperparts, pale gray underparts, rust-brown flanks. Head has dark gray cap and crest, pale gray face, and white eye-ring. Bill is black. Wings and tail are gray. Legs and feet are gray. Most spend their entire lives not far from their birthplace.

Red-headed Woodpecker: Medium-sized woodpecker with black upperparts and tail, and white underparts and rump. The head, throat, and upper breast are dark red. Wings are black with large white patches. Bill, legs and feet are black. This is the only woodpecker in the east with a completely red head.

Audubon's Shearwater: Small, stocky seabird with dark brown upperparts and white underparts. Underwing coverts are white. Tail is dark brown with short, gray undertail coverts. Bill is dark and legs and feet are pink. Fish and squid make up most of its diet. Alternates rapid wing beats with glides.

Manx Shearwater: Small shearwater with brown-black upperparts and white underparts, underwings and undertail coverts. Black head is darker than back. The bill is dark. Wings are long, slim, and straight. Tail is short and pointed. Feeds on fish and squid. Alternates long glides and rapid wing beats.

Masked Booby: This large seabird has a white body, black trailing edge on the wings, and a pointed black tail. The head has black mask and a long pointed yellow bill. The legs and feet are yellow-gray. It plunge dives from 40 feet for small squid and flying fish. It alternates strong rapid wing beats with glides. Sexes are similar, but the female is larger.

Brown Booby: This large seabird is mostly dark brown with white under wing coverts, belly and vent. It has a blue-gray to yellow bill and yellow legs and feet. To acquire food, it plunge dives from 30 to 50 feet. It feeds on parrot fish, flatfish, mullets and other fish. It has alternating strong rapid wing beats and glides. The sexes are similar.

Buller's Shearwater: This medium-sized bird has gray upperparts and white underparts. The head has a white face and black cap. The bill and tail are black. The legs and feet are pink. A dark gray M-pattern is visible across the upperwings and back in flight. It rotates deep steady wing beats with long glides. It soars in high winds. It feeds on krill, small fish, and jellyfish. The sexes are similar.

Cook's Petrel: This small petrel has a slate-gray back and upperwings marked by a black M-pattern, white underparts, under wings, and face with a small dark eye patch, black bill, blue-gray legs and feet, long slender wings, and a gray tail with black-tipped central feathers and white edges. It feeds mostly on fish and squid. Rapid and erratic flight. Sexes are similar.

Stonechat: Small thrush with black back and white rump. Underparts are white except for orange breast. Head is black and collar is white. Wings are black with white stripes. Tail is black. Female is paler overall with brown head and buff rump. Found in open meadows and marsh edges. Forages for insects on ground; also picks off vegetation.

McKay's Bunting: Large bunting, bright white body, black wing tips, black markings on back and tail. Large bill, legs, and feet are black. Said to be the whitest of all North American songbirds. Forages on ground. Swift flight, alternates raping wing beats with wings pulled to sides.

Horned Lark: Medium-sized lark with pale or dark brown upperparts and white underparts. Face and throat are pale yellow to white and mask, cap, and ear tufts are black. Tail is dark with white edges. Forages on ground, usually in open fields. Eats seeds, grains, insects and small mollusks.

Pechora Pipit: Small, shy pipit with heavily streaked, dark brown upperparts. The breast, sides, and flanks are washed yellow with heavy black streaks. Belly and outer tail feathers are white. It is named after the Pechora River Valley in northeastern Russia, where it breeds and nests.

Pacific Reef-Heron: Medium-sized heron with two color morphs; one all white, the other black-gray with white on the throat. Straight, pointed, gray-pink and yellow bill. Legs gray-green and green-yellow. Sexes similar, juvenile dark morph has black-brown blotches, no white on throat. Juvenile white morph has some gray in plumage.

Sulphur-crested Cockatoo: Large white parrot with white-yellow feathers in long crest, white-yellow at base of flight feathers in wings, and yellow-white at base of the feathers in the tail. Black-brown eye. Strongly-downcurved black bill. Fairly long, broad wings. Medium-length, rectangular tail. Female has more red-brown eye. Juvenile like adult.

Black-naped Tern: Small, white tern with pale gray back and wings, and black line that extends from the eye back to black patch on the nape. Long, pointed wings have black line on outermost primary. Fairly long, forked tail. Sexes similar. Juvenile is like adult but has some black scaling on back, black shoulders, and bill tends to be shorter,

Cattle Egret (Palau): Small, short-necked and stocky egret with white body and pale orange-brown patches on head, neck and back. Sexes are similar. Breeding plumes are slightly shorter on the female. Breeding birds' legs are yellow-green and irises are dark yellow. During peak breeding season, bill, legs and irises turn a bright red. Winter adult and juvenile are white and with dull yellow-orange eyes and bill, legs are green-black. Races separated by the amount and intensity of the orange-brown patches.

Hawaiian Petrel: This medium-sized, tube-nosed seabird has a white front and cheeks, black upperparts and white underparts. It has a square, medium-length tail and long pointed wings. The diet includes mostly squid, but it also takes fish and crustaceans. It has an erratic, arching and diving flight. The males are slightly larger than the females.

Gray-backed Tern: This medium-sized bird is mainly dark above and white below. It has long pointed wings and a long forked tail. It has a black cap, nape and a line through the eye to the base of the bill, white front, and white outer tail feathers. It has a black, dagger-like bill and short black legs. The diet includes tiny fish and squid. The swooping flight is graceful and buoyant.

Yellow-billed Cardinal: Native to South America, this bird has a bright red head, black upperparts, an incomplete white collar that nearly meets at back of neck, white underparts, black chin and throat, a yellow bill, and brown-pink legs and feet. Female has gray upperparts, white underparts, and brown head. Feeds on seeds and insects. Undulating flight.

Palila: This large finch-billed honeycreeper is endemic to Hawaii. It has a yellow head with black lores separated from a gray back by a distinct line. It has a yellow breast, white belly, gray back, olive-green wings and tail and black legs and feet. The females are more subdued in color. Feeds primarily on seeds. Strong, bouncy flight with steady wing beats.

Chinese Pond-Heron: Small, stocky white heron with red-brown head and neck, chestnut breast, slate-gray back, yellow-white around eye, and white chin and line down front of neck. Short, rounded tail. Non-breeding adults have more black on bill, no red-brown or chestnut in plumage, brown-gray back, and brown-gray streaks on crown, face, and breast.

Hawaiian Stilt: This large water bird is a subspecies of the Black-necked Stilt. It is black above and white below with a white forehead. It has red eyes, a straight black bill, long pink legs, and sometimes a narrow dark terminal tail band. Feeds on worms, aquatic insects, fish and mollusks. Swift direct flight with shallow wing beats. Sexes are similar.

Guadalupe Murrelet: Medium-sized Murrelet with black upperparts and white face, throat, underparts, and underwing coverts. Bill is dark and thin. Eyes are brown with broken white eye-rings. Legs and feet are black. Feeds on small crustaceans and fish. Swift direct low flight with rapid wing beats.
Formerly the Xantus's Murrelet. Name changed in 2012 by the American Ornithologist Union.

Osprey (Palau): Large raptor with dark brown upperparts and contrasting white underparts; faint breast band, speckled brown necklace. Intensity varies based on sex and race, males usually less marked. Small white head has dark crown and eye stripe. Bill is dark. Wings are held at a distinct angle in flight; underwing shows barred flight feathers. Wings are fairly long and narrow; wing bends back at carpal joint, giving characteristic shallow V-shape. Legs and feet are gray. Sexes are similar. Juvenile has scaled upperparts, less marked breast band.

White Tern: This medium-sized tern is snow white overall. It has dark eyes and black eyerings which makes it appear to have large eyes. The wings and tail may appear translucent when overhead. It has a notched tail, a black bill with a dark blue base, and blue-gray legs and feet. Feeds primarily on juvenile or smaller fish. Swerves, swoops, and soars. Sexes are similar. AKA Common Fairy Tern.

Ivory Gull: A pure white gull whose entire life is restricted to the edge of the floating pack ice. Legs dark, bill dusky with yellow tip. It eats fish, insects, lemmings and crustaceans, and is also an active scavenger. Bouyant, graceful flight. Often flies with feet trailing and dangling below.

Little Egret: Medium-sized, all white egret with plumes on head, breast, and back. Legs are black with yellow feet. Black bill, and yellow lores. Nonbreeding adult lacks head and back plumes, has gray lores, and shows yellow on lower legs. Difficult to distinguish from Snowy Egret. Flight is direct.

Sooty Tern: This medium-sized tern has long wings, a deeply forked tail, black crown, nape, and upperparts and a broad triangular white forehead patch. The underparts are white; upper tail is black with white outer edges. It has a direct flight with strong, shallow wing beats. It hovers before dipping for prey. It feeds on squid and fish. Sexes are similar.

Ross's Gull: The pink gull of the high Arctic. Small gull, pale gray upperparts, gray-white nape, white neck with thin black collar, and white, wedge-shaped tail; underparts are variably pink. Black bill is very short; legs, feet are orange-red. Often feeds on mudflats like a wader.

Sandwich Tern: This is the only medium-sized tern with a long slender black bill tipped with yellow. The upperparts are very pale gray, nearly white, and the underparts are white. The black crown has a short black crest, the white tail is deeply forked, and the legs and feet are black. It has a direct flight and hovers before diving for fish. Sexes are similar.

Barolo Shearwater: Tiny shearwater, dark brown upperparts and white underparts; dark cap extends only to eye. Bill is short and black. Swims and dives for food, picks food off surface of water. Feeds on fish and squid. Flight is low, fast and straight, alternates rapid wing beats and banking glides.
Formerly called the Little Shearwater. Name changed to Barolo Shearwater in 2014 by the American Ornithologist Union.

Greater Scaup: This large diving duck has a glossy green-black head, white sides and belly, black tail, neck and breast, barred gray flanks and back. The eyes are yellow and the bill is blue-gray with a black tip. The diet includes aquatic insects and plants. It has a rapid direct flight with strong, quick wing beats. The female is dull brown with a white patch on the face at base of bill.

Chinese Egret: Population is seriously declining due to competition for living space with humans and other egrets. White overall with shaggy crest, blue-green lores, orange-yellow bill, and black legs with yellow feet. Has been seen feeding on mudflats and tidal flats with other egrets and herons.

Red-crested Cardinal: Native to South America, this bird has a bright red head, crest, face, chin and upper breast. The upperparts are gray with an incomplete white collar that nearly meets at the back of the neck. It has white underparts, a light gray bill and gray legs and feet. It mainly feeds on plant seeds, fruits, berries and insects. It has an undulating flight. Sexes are similar.

Bumblebee Hummingbird: One of the smallest hummingbirds at 2.75 inches with green upperparts, sides, and white underparts. The gorget is violet-red and the rounded tail is green with a rufous base. This bird can hover in a horizontal positon with it's tail cocked vertical as it feeds on nectar.

White Ibis: This coastal species is white overall with pink facial skin, bill, and legs that turn scarlet during breeding season. Black tips on the primary feathers are only seen in flight. Flies in straight line formation with neck and legs outstretched, roosts high in trees and bushes at night.

Northern Gannet: Very large seabird. White overall with black primaries and long pointed wings. Light buff-yellow wash on crown of head extending down nape may be visible. Bill, legs, and feet are gray. Dives for fish and squid. Alternates rapid wing beats with short glides. Soars to great heights.

Red-whiskered Bulbul: Introduced to parts of North America as escaped caged birds. This bulbul has brown upperparts, a black crested head, mask and partial collar, an orange-red patch behind the eye and a white cheek patch. The underparts are white with brown wash. Diet includes berries, fruits and insects. It has a direct flight with rapid wing beats. Sexes are similar.

White-headed Woodpecker: Medium-sized woodpecker, mostly black with large white wing patches. Head and throat are white; nape patch is red and narrow. Small black stripe behind the eye. Bill is black and small. Legs and feet are black. This is the only North American woodpecker with a white head.

Nuttall's Woodpecker: Small woodpecker with black-and-white barred back, wings, and outer tail. Underparts are white with spotted sides and barred flanks. Face is black-and-white with white nasal bristles above bill. Rear crown patch is small and red. Bill is short and black. Legs and feet are gray.

Black-bellied Plover: This medium-sized shorebird has black upperparts vividly marked with a white spot on each feather. It has a black face, throat and belly and white forehead and crown that extends over the eye, down the back and sides of the neck. Vent and wing stripe visible in flight. Strong direct flight with powerful rapid wing beats. Feeds on marine worms and insects. Sexes are similar.

Common Murre: Medium seabird with brown-black upperparts, throat, white underparts, and long dark bill. Tail is short. Some Atlantic birds have a narrow white eye-ring and stripe extending past the eye. Can dive to depths of more than 240 feet. Feeds on fish and invertebrates. AKA Common Guillemot.

Downy Woodpecker: The smallest woodpecker in North America. Has a white back, black nape and black wings with white spotting. Underparts are white. Face is white with black stripes. Hindcrown patch is red. Tail is black with black-spotted or barred white outer tail feathers. Bill is black and short.

Hairy Woodpecker: Small woodpecker with black-and-white upperparts, white underparts. Head has red hindcrown patch. Face is white with black stripes.Tail is black with white outer tail feathers. Northwest birds have gray-brown breast, belly, and rump. Bill is long and black. Legs and feet are black.

Acorn Woodpecker: Medium-sized, clown-faced woodpecker. The male has a red crown, white forehead and glossy black face and body. The breast is white with black streaking; belly and rump are white. Yellow-tipped throat feathers may be present. Wings are black with white patches. Eyes are white. Female is similar except for a black patch between the white forehead and red crown. The juvenile has a dark eye.

Thick-billed Murre: Medium-sized seabird with black upperparts, head and neck, and white underparts. A thin, white stripe extends from bill to cheek. The bill is short and black. Legs and feet are black. Feeds on fish, marine worms, crustaceans and squid. Strong swift flight low over water.

Scripps’s Murrelet: Medium-sized Murrelet with black upperparts and white cheeks, throat, underparts, and underwing coverts. Bill is dark and thin. Eyes are brown with broken white eye-rings. Legs and feet are black. Feeds on small crustaceans and fish. Swift direct low flight with rapid wing beats.
Xantus's Murrelet was split in 2007 by the AOU into the Guadalupe Murrelet and Scripp's Murrelet.

Snow Goose: This large goose has two color phases. The White phase is all white with black wing tips. The Blue phase has a white head and neck, blue-gray upperparts, gray-brown breast and sides, white belly, pink bill, legs and feet and black lower mandible. Sexes are identical within each phase. Diet includes pasture grasses and grains. Strong direct flight in bunched flocks or U formations.

Trumpeter Swan: Largest swan in the world, completely white but with head and neck often stained rust-brown from contact with ferrous minerals in wetland soils. Bill, legs, and feet are black. Feeds on aquatic plants. Strong direct flight on steady wing beats. Flies in straight line or V formation.

Horned Puffin: Medium puffin with black upperparts, white underparts. White face with a black, fleshy horn above eye extending to top of head. Bill is triangular and massive during summer, when it is bright yellow with orange tip. Strong direct flight on rapid wing beats, often high over the water.

Bank Swallow: Small swallow with brown upperparts, and a brown breast band seperating white underparts from white throat and chin. Tail is notched. Brown legs, feet. The smallest North American swallow. Swift, erratic flight, alternating several shallow, rapid wing beats with short to long glides.

Ancient Murrelet: Small, pelagic seabird with black head and dark gray back and wings. White underparts extend up onto the face as a cheek patch. Bill is short and yellow with a blackish tip. An open ocean species vaguely resembling a small penguin that can fly. Swift, direct, and low flight.

Virginia's Warbler: Small warbler, gray upperparts, yellow rump. Throat is white with yellow patch, breast and undertail are yellow, sides and belly are white with a gray wash. Head has rufous crown patch, bold white eye-rings. Named for the wife of the army surgeon who discovered it in New Mexico.

Black-and-white Warbler: Small, black-and-white striped warbler with a white median head stripe bordered by black. Black bill, legs and feet. It forages unlike any other warbler by moving up and down the trunks of trees and crawling under and over branches in a style similar to that of a nuthatch.

Warbling Vireo: Small vireo, gray to olive-gray upperparts, white underparts; sides sometimes washed with yellow. Eyes are dark brown, have thick, white eyebrows and faint, dark eye-lines. Gray wings and tail. Legs and feet are blue-gray. Has the largest breeding range of any North American vireo.

Whooping Crane: Adults are nearly all white except for red crown, black mask, and black primary feathers most visible in flight. The juvenile has rust-brown head and upper neck, and brown wash over mostly white body. Very rare bird; near extinction. Feeds on frogs, fish, mollusks, small mammals and crustaceans, grain and roots of water plants. Direct flight; slow downward wing beat and a powerful flick on the upbeat.

Snowy Egret: This is a medium-sized, totally white egret with a long slender black bill and yellow lores. The eyes are yellow, the legs are black, and the feet are bright yellow. The head, neck and back have long lacy plumes during breeding season. The diet varies but includes crustaceans, insects and fish. Buoyant flight with steady fast wing beats. The sexes are similar.

Belted Kingfisher: This medium-sized bird has a bushy crest, white collar and large, black dagger-like bill. It has blue-gray upperparts, white underparts and gray legs and feet. Males have one blue band across the white breast, while females have a blue and chestnut band. It hovers above water to search for prey such as crayfish and frogs. Slow direct flight with an erratic pattern.

Crested Caracara: Large, ground-dwelling falcon, black body, finely barred tail, wing panels and upper breast. Head crest is black, facial skin is red, and large bill is blue-gray and hooked. Legs are long and yellow. Strong steady wing beats alternated with long to short glides. Soars on thermals.

Gyrfalcon: Large northern falcon with three color morphs: dark, white, and gray. Dark morph is dark gray with pale streaks on throat and upper breast. White morph is white with dark spots and markings on wings, nape, and sides. Gray morph is a mix. The eyes, bill, and legs of all morphs are yellow.

Cattle Egret: Small, stocky egret with a white body and pale orange-brown patches on the head, neck and back. The eyes, bill and legs are orange. This is the only white egret with both a yellow bill and yellow legs. It feeds primarily on insects. It has a direct flight on quick steady wing beats. The sexes are similar.

Black-crowned Night-Heron: This is a medium-sized, stocky heron with short neck and legs, black upperparts, gray wings and white to pale gray underparts. It has a stout black bill, red eyes and yellow legs. It feeds on small invertebrates, crustaceans, vertebrates, mammals, the eggs and the young of other birds and, plants. It has a direct flight with slow steady wing beats. The sexes are similar.

Barn Owl: This medium-sized owl has a glaring white, heart-shaped facial disk, no ear tufts and long legs. The upperparts are orange-brown with fine white spots and dark bars, and the underparts are white with small black spots. It feeds primarily on small mammals and also takes small birds. It has a slow, silent moth-like flight. Sexes are similar, but females are darker in color than the males.

Snowy Owl: Large, white owl with variable black bars and spots. The head is round and lacks tufts, eyes are yellow, and the bill is black. Feathered feet and toes provide protection from the arctic cold. Direct flap-and-glide flight with powerful, deep wingbeats. North America's only all-white owl.

White-tailed Kite: Small hawk with gray upperparts, black shoulders, and white face and underparts. Eyes are red, bill is black. Underwings are white and gray with dark patches at bend. Tail is square, pale gray, and shorter than folded wings. Legs and feet are gray. Soars on thermals and updrafts.

Great Egret: This large white heron has yellow eyes and a bill that is also yellow but appears orange when breeding, black legs and feet, and long feather plumes that extend from the back to beyond the tail during breeding season. Feeds on fish, frogs, insects, snakes and crayfish. It has a buoyant direct flight on steady wing beats. Sexes are similar in appearance, but males are slightly larger.

Glaucous Gull: This large white gull has a pale gray back and yellow eyes. The bill is yellow with a red spot on the lower mandible. The wings are white-edged and white tipped; the legs and feet are pink. It is an active predator of seabird nesting colonies. Diet includes fish, insects and birds. It has slow steady wing beats and soars on thermals and updrafts. The sexes are similar.

California Gull: This is a medium-sized gull with a white head and underparts, gray wings and black wing tips. The bill and legs are yellow, and it has a red eyering. It has a strong direct flight with deep wing beats. It feeds on worms, mice, other birds and their eggs, and garbage. The sexes are similar, but the males are usually larger than females, with a larger bill, head and tarsi.

Ring-billed Gull: This medium-sized gull has gray upperparts and white underparts. It has a white head and yellow bill with a black ring near the tip. The wings are gray above, tipped black with white spots, and white below; yellow legs and feet. It has a strong direct flight on deep wing beats and soars on thermals. The sexes are similar.

Glaucous-winged Gull: This large gull has gray upperparts with white underparts, head and neck. The eyes are dark and the bill is yellow with a red spot on the lower mandible. The wings are gray with white edges and spots near the tips. The legs and feet are pink. It feeds on fish, small birds, or almost anything. It has a powerful direct flight and often soars on thermals. The sexes are similar.

Bewick's Wren: Small wren with unstreaked, gray to red-brown upperparts and plain white underparts. White eyebrows are conspicuous. Tail is long and white-edged with dark bars. Bill is long and slightly decurved. Legs and feet are gray. Eastern populations are red-brown, Northwestern birds are more brown, and Western Interior birds are gray-brown. Eastern populations have seriously declined since the 1960s.

Dark-eyed Junco: Medium-sized sparrow with considerable geographic color variation, although all exhibit a pink bill, dark eyes, white belly, and dark-centered tail with white outer feathers. Gray-headed form has gray head, rump, breast, and sides, and rust-brown back. Slate-colored form is slate-gray overall with darker head. Oregon form has black hood, chestnut-brown back and buff-brown flanks. White-winged form is blue-gray overall and shows two white wing bars. Pink-sided form is blue-gray with darker wings and pink-gray flanks. Female of each form resembles male but is usually paler. Juveniles of all forms are heavily streaked brown with darker heads, white bellies, and white outer tail feathers.

Killdeer: This large banded plover has brown upperparts, white underparts, two distinct black bands cross upper breast and white stripes on the wings that are visible in flight. The tail and rump show rust-brown in flight. It has a black bill, pink-brown legs and feet. Feeds primarily on insects. It has a wavering, erratic flight; capable of swift direct flight. Sexes are similar.

Bufflehead: This small diving duck is mostly white with a glossy green-black to purple-black head and back. The head has a large white patch behind eye. The wings are dark with white patches visible in flight. It feeds on aquatic plant seeds, and insects, larvae and snails. It has a swift direct flight with rapid wing beats.

Tundra Swan: This small swan is completely snowy white. Its head and neck is often stained rust-brown from ferrous minerals in marsh soils. It has a black bill with a yellow spot at the base and black legs and feet. Diet includes aquatic vegetation and grass. Strong direct flight on steady wing beats. Flies in straight line or V formation. Most common swan in North America. Sexes are similar.

Red-tailed Tropicbird: This medium-sized tropic bird has silky white plumage and a small but conspicuous black eye stripe. It has a coral red bill and black legs and feet. The tail has long, red central streamers. It mainly feeds on flying fish. Swift, purposeful flight, alternates fluttering wing beats with glides. Hovers while hunting and in courtship. Sexes are similar.

Cerulean Warbler: The male is sky-blue with faintly streaked upperparts and black-streaked white flanks. A black band separates a white throat and belly. Wings have two bold white bars. The female has unstreaked blue-gray upperparts and a yellow wash on face and breast with pale streaks on flanks, and yellow eyebrows. The immature bird is paler and more olive over all. Prefers to stay high in the crowns of mature deciduous trees, making it difficult to see.

White-capped Albatross: Large seabird with white body and gray back. The bill is gray with a yellow tip and base. Underwing is white with diagnostic narrow black margin. Tail is gray. Legs and feet are pink. Soaring flight on stiff, slightly drooped wings. Often interuppted with several slow deep wing beats.
Formerly Shy Albatross. Split by the American Ornithologist Union in 2014 into the White-capped Albatross, Salvin's Albatross and Chatham Albatross. Both the Salvin's and Chatham are out of the North American range."

Least Tern: This small tern has slate-gray upperparts, white underparts; crown and nape are black, and the forehead is white. Black leading edge of outer wing is conspicuous in flight. The tail is forked, and the bill and feet are yellow. It feeds on small fish and invertebrates. It has a fast smooth flight with rapid wing beats. Hovers briefly before dipping down to seize prey. Sexes are similar.

Sabine's Gull: Small gull with gray back and white nape, rump, and underparts. Hood is solid black and eye-ring is dark red. Bill is black with yellow tip; legs and feet are black. The upperwings are gray with black primaries and white secondaries. Tail is slightly forked when folded.

Short-tailed Albatross: Largest and only white-bodied albatross in the North Pacific. The head and nape have a golden-yellow cast, white wings have black edges and tips, and the tail is white with black fringe. Legs and feet are pink-gray. Feeds mainly on squid, but also eats fish and crustaceans. Dynamic soaring, glides for hours. Sexes are similar. Almost became extinct in the late 19th century.

Ruddy Turnstone: This medium-sized sandpiper has red-brown upperparts, white rump and underparts, and a black-marked face. It has a short, dark, slightly upturned bill, a white tail with a black terminal band, and orange legs and feet. The wings have a unique brown, black, and white pattern visible in flight. Feeds on invertebrates. Swift direct flight with rapid wing beats. Sexes are similar.

Red-eyed Vireo: Medium vireo with olive-brown upperparts and white underparts. Head has a gray cap, white eyebrow, black eyestripe, and red eyes. Blue-gray legs and feet. Alternates short glides with series of rapid wingbeats. May hover briefly to pick berries or insects from foliage.

Yellow-throated Vireo: Large vireo, olive-gray upperparts, gray rump. Throat and breast are bright yellow, belly is white. Eyes are dark. Spectacles are yellow. Wings are dark with two white bars. Legs and feet are black. It is the most colorful member of its family in North America.

Red-footed Booby: This black-tailed white-morph is a small booby with a white head, body and tail. It has a pale blue, pink-based face and pale blue bill. It has black flight feathers and bright red legs and feet. The brown form is brown overall with darker flight feathers. Strong steady wing beats with glides. It feeds on fish and small octopi. Sexes are similar, but the female is much larger.

Sage Thrasher: Small thrasher, gray upperparts, dark-streaked white underparts with pale brown wash. The head is gray, bill is short and slightly decurved. Wings are dark with thin,white bars. Tail is dark with white corners. Legs and feet are black. Fast flight on shallow wing beats.

Lesser Black-backed Gull: Medium-sized gull with dark gray back and wings. Head, neck and underparts are white. Rump and tail are white. Bill is yellow with red spot near tip. The wings have dark tips with white spots; legs and feet are yellow. Eyes are yellow with red orbital rings.

Laughing Gull: This medium-sized gull has a gray back, white underparts and neck, a black hood and red bill. The wings are gray and white-edged, and black at the tips; tail is white. The legs and feet are black. Diet includes insects, fish, shellfish and crabs. It has a slow flight with deep wing beats and soars on updrafts. It is named for its laughter-like call. Sexes are similar.

White-tailed Ptarmigan: Small grouse, mottled brown overall, white on wings, breast, belly, red eye comb, white-edged brown tail, legs covered with white feathers. It is the smallest of the ptarmigans, and the only one that nests south of Canada. Lives most of its life above timberline.

Thayer's Gull: Having had full species status since 1973, as of 2017, the AOU considers this gull to be a subspecies of the Iceland Gull and has lumped it there. To see this please jump to the Iceland Gull species account. New subspecies range maps for this bird will be available in the next iBird update at which time we will retire the Thayer’s Gull as it’s own species.

Herring Gull: This large gull has a pale gray back, black-tipped wings, a white head, neck, breast, tail and underparts. The bill is yellow with a red spot near the tip; legs are pink. Diet includes marine invertebrates, fish and insects. It has a strong steady flight with deep wing beats and soars on thermals and updrafts. The males are larger than females; the sexes have similar plumage.

American Golden-Plover: Medium sandpiper with black face, underparts. Back is dark brown with yellow spots; has a white S-shaped mark along head and sides. Markings provide camouflage to blend in with tundra breeding grounds. Bill is black, thin, and short. Swift direct flight on rapid wing beats.

Tennessee Warbler: Small warbler with olive-green upperparts, white underparts, and olive-gray washed sides. Darker head has white eyebrows and dark eyestripes. Wings are plain gray. Tail is short. It spends the summers in Canada and is only found in Tennessee during migration. Eats mostly insects.

Steller's Eider: Small eider with black back and collar, white sides, buff-brown underparts with small but distinct black spot on side. White head has a dark tuft, black eye patch and chin. Wings are white with black primaries and a white-bordered blue speculum. Blue-gray bill, legs and feet.

Lesser Sand-Plover: Medium-sized, chunky plover with gray upperparts, white underparts, and bright rust-brown breast band and nape. The head has gray-brown cap and thick black eyestripe broken by a white forehead. Throat is white with a black border. Bill is black and legs and feet are black.

Hermit Warbler: Small warbler, gray upperparts, white underparts, black-streaked flanks. Head is yellow with black throat and nape. Wings are gray with two white bars. Bill, legs and feet are black. They spend most of their time in the tops of tall fir and pine trees, making them difficult to see.

Ovenbird: Medium, ground walking warbler, olive-brown upperparts, heavily spotted white underparts. Head has dull orange central crown stripe edged in black, and a white eye-ring. Wings, tail are olive-green. Name is from its covered nest, the dome and side entrance make it resemble a dutch oven.

Chestnut-sided Warbler: Medium warbler with black-streaked upperparts, white underparts, and chestnut-brown flanks. The cap is bright yellow and moustache stripe is black. Often cocks its tail high above its back as it feeds. The only North American warbler with pure white underparts in all seasons.

Bonaparte's Gull: This is a medium-sized gull with a black head and bill, gray back and wings and white underparts and tail. White outer primaries with black trailing edges are visible in flight. The legs are red-orange. It catches fish by wading and diving. It has a light and direct flight with rapid wing beats. It feeds mainly on insects, which it catches in mid-flight. The sexes are similar.

Caspian Tern: This large stocky tern has pale gray upperparts and white underparts. The cap is black and may appear weakly crested. The large bill is coral-red, the undersides of the primaries are gray, a short white tail is slightly forked, and the legs are black. The flight is strong, swift and graceful. It hovers above water before diving and mainly feeds on fish. The sexes are similar.

Black-legged Kittiwake: This is a medium-sized white gull with pale gray back and upperwings and black wing tips. The bill is yellow and the legs and feet are black. It has a swift, graceful flight, alternating several rapid shallow wing beats with a glide. Hovers over water before diving for prey at the surface. It feeds on marine invertebrates, plankton and fish. The sexes look very similar.

Franklin's Gull: This medium-sized gull has a gray back and white underparts. It has a black head, white eye ring, orange bill with a black spot near the tip, and red-orange legs. The wings are short with white spotted black tips. It has a strong direct flight with deep wing beats. It feeds mostly on terrestrial and aquatic insects. The sexes are similar; males are slightly larger.

Common Tern: This medium-sized tern has medium gray upperparts, pale gray underparts and a glossy black cap and nape. The wings are dark-tipped with a dark leading edge on the forewing. The red bill is black-tipped, legs are red, and the tail is deeply forked and elongated. It has a direct flight, hovering above water before diving for prey. Feeds mainly on small marine fish. Sexes are similar.

Arctic Tern: This is a medium-sized, slim tern with gray upperparts, black cap, a white rump and throat, and pale gray underparts. The tail is deeply forked and white with dark edged outer feathers. The bill is dark red. The legs and feet are red. It has a buoyant, graceful flight with steady wing beats. It feeds on small fish, crustaceans and insects. Both sexes are similar in appearance.

Hooded Merganser: This small merganser has black upperparts, white underparts with two black bars on side of breast, and red-brown flanks. The crest shows a large white patch when raised; white stripe extends backwards from eye when lowered. Feeds on fish and aquatic insects. Dark wings have white shoulder patch visible in flight. Rapid direct flight with fast wing beats. Sexes are similar.

King Eider: Large diving duck with black body and white breast, back. The crown and nape are pale blue; distinct bill is orange-red, sweeping upward into a large, orange basal knob outlined in black. Wings are black with large white patches visible in flight. Tail has white patches at the base.

Common Merganser: Large, sleek diving duck with black upperparts and white underparts. Head and upper neck are green-black with head crest usually not visible. Long, thin bill is bright red. Wings are black with extensive white patches. Feeds on fish, mollusks, crustaceans, insects and plants.